Exhaust operated heater



INVENTOR BY may W% ATTORNEY fledjwckbazzim,

F. BUSCHBAUM EXHAUST OPERATED HEATER Filed May 16, 1932 July 25, 1933.

Patented July 25, 1933 6 PATENT OFFICE I FRED BUSGI-IBAUM, or s'r. LOUIS. MISSOURI EXHAUST OFERA'IJIEI) HEATER Application filed May '16, 1932. Serial No. 611,669.

This invent-ion relates to exhaust operated heaters especially adapted-for aeroplanes, automobiles and the like, and has for the primary object, the provision of a device of the above stated character which is capable of producing maximum heat free of contamination by the exhaust of an engine employed as the heating medium.

Another object of this invention is the provision of a plurality of exhaust chambers or passages, soconstructed as to ofier minimum resistance to the flow of exhaust and which provide maximum heating areas for the air or fluid 'to engage and become rapidly heated.

"Vith these and other objects in view, this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanyingdrawing, in which Figure 1 is a side elevation illustrating a heater constructed in accordance with my invention.

Figure 2 is a vertical sectional view illustrating the same.

Figure Sis a transverse sectional view taken on the line 33 of Figure 2..

Figure 4 is a similar view taken on the line 44 of Figure 2. 1

Referring in detail to the drawing, the numeral 1 indicates an outer shell having one end reduced to form a flange 2 on which is mounted a reducing collar 3 to which an exhaust pipe 4 is connected. The opposite end or the front endof the shell 1 is flared to form an air intake 5.

haust chambers or passages 6 are arranged in the shell 1 and supported in spaced -rela-- tion thereto byspacers 7. The exhaust pas sages or chambers are of substantially triangular shape in cross section and extend radially from the longitudinal axis of the heater and have their ends opened to permit exhaust to pass through the various chambers or passages with minimum resistance. The ends of the chambers .6 are A plurality of exformed at an inclination so that when arranged within the shell'l one group of ends extends into the collar 3 and the other group of ends extends inwardly of theshell from the intake end thereof, cooperating with each other in forming a conical shaped mouth 8 for directing the exhaustinto the chambers. A flange 9 connects the various chambers about the mouth Sand receives a reducing collar 10 tocwhich an exhaust manifold 11 of an engineisconnected; The chambers or passages 6 grouped within the; outer shell 1 in the manner described form within said shell anannular airpassage 12 communicative iwith a series of radially "extendmg air passages 13 sothat air entering radial passages 13 and enter the outlet passage 14, the forward end of which is closed by a cap 15 and its rearward end connected. to a pipe 16 adapted to convey the heated air to any point desired in an aeroplane or automobile. The pipe 16 extends outwardly through one wall of the exhaust pipe 4 as clearly shown in Figure 1.

The inner edges of the exhaust chambers or passages are secured to the cap 15 and to a collar 17 receiving the intake end of the pipe 16 for the purpose of forming the outlet passage llv for the heated air.

From the foregoing description taken in connection with the accompanying drawing, it will be seen that when the device is connected to the exhaust manifold of an engine of an aeroplane or automobile, the air will enter the shell 1 at the forward end thereof and be forced entirely about each exhaust chamber or passage and enter the centrally located outlet passage 14 and thence into the pipe 16 leading to the desired point within theautomobile or aeroplane for heating the same. It is also to be noted that the exhaust entering the mouth 8 will be evenly distributed to the various exhaust chambers or passages 6 so as to thoroughly heat the Walls of each chamber and escape therefrom into the exhaust pipe 4 by Way of the collar 3.

\Vhile I have shown and described the preferred embodiment of my invention, it

will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of my invention, as claimed. 7

Having thus described my invention, What I claim is:

1. An exhaust operated heater compris-' 111g an'outer shell having one end opened to' the atmosphere to permit air to enter the interior of the shell, a plurality of radially arranged compartments Within the shell and supported in spaced relation thereto and each of said compartments being of substan tially triangular shape in cross section and said compartments spaced from each other ,,to permit air Within the shell to circulate about each compartment, said compartments having their ends opened to permit theexhaust from an en ine to pass therethrough, the inner edges of saidcompartments being circularly disposed to outline a central air passage having one end closed and its oppoheat the Walls thereof, means connecting the compartments at the ends thereof to prevent exhaust from passing between'the compartments, said compartments cooperating With each other in forming a plurality of radially arranged air passages, the inner edges of the compartments being circularly disposed to outline a central air passage hav-.

ing one end closed and its opposite end connected to an air conveying pipeyand communicative throughout its length with the innerend of the radially arranged air passages and a shell surrounding the compartments and having one end connected to said compartments to form a closure therefor and havlng its opposite end flared to catch 2111' and direct the air into the radially arranged air passages for contact with the heated Walls of said compartments.

- FRED BUSCHBAUM.

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